#include "chartdir.h"
#include <stdio.h>
int main(int argc, char *argv[])
{
char buffer[256];
// The data for the line chart
double data0[] = {42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42};
double data1[] = {65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78};
double data2[] = {36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24};
const char *labels[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",
"Sep", "Oct", "Nov", "Dec"};
// Create a XYChart object of size 600 x 400 pixels
XYChart *c = new XYChart(600, 400);
// Add a title to the chart using 18 pts Times Bold Italic font
TextBox *title = c->addTitle("Product Line Global Revenue", "timesbi.ttf", 18);
// Tentatively set the plotarea at (50, 55) and of (chart_width - 100) x
// (chart_height - 120) pixels in size. Use a vertical gradient color from sky
// blue (aaccff) t0 light blue (f9f9ff) as background. Set both horizontal and
// vertical grid lines to dotted semi-transprent black (aa000000).
PlotArea *plotArea = c->setPlotArea(50, 55, c->getWidth() - 100, c->getHeight() -
120, c->linearGradientColor(0, 55, 0, 55 + c->getHeight() - 120, 0xaaccff,
0xf9fcff), -1, -1, c->dashLineColor(0xaa000000, Chart::DotLine), -1);
// Add a legend box and anchored the top center at the horizontal center of the
// chart, just under the title. Use 10pts Arial Bold as font, with transparent
// background and border.
LegendBox *legendBox = c->addLegend(c->getWidth() / 2, title->getHeight(), false,
"arialbd.ttf", 10);
legendBox->setAlignment(Chart::TopCenter);
legendBox->setBackground(Chart::Transparent, Chart::Transparent);
// Set y-axis title using 10 points Arial Bold Italic font, label style to 8
// points Arial Bold, and axis color to transparent
c->yAxis()->setTitle("Revenue (USD millions)", "arialbi.ttf", 10);
c->yAxis()->setLabelStyle("arialbd.ttf", 8);
c->yAxis()->setColors(Chart::Transparent);
// Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this
// as the guideline when putting ticks on the y-axis.
c->yAxis()->setTickDensity(30);
// Add a line layer to the chart
LineLayer *layer = c->addLineLayer();
// Set the line width to 3 pixels
layer->setLineWidth(3);
// Add the three data sets to the line layer, using circles, diamands and X
// shapes as symbols
layer->addDataSet(DoubleArray(data0, (int)(sizeof(data0) / sizeof(data0[0]))),
0xff0000, "Quantum Computer")->setDataSymbol(Chart::CircleSymbol, 9);
layer->addDataSet(DoubleArray(data1, (int)(sizeof(data1) / sizeof(data1[0]))),
0x00ff00, "Atom Synthesizer")->setDataSymbol(Chart::DiamondSymbol, 11);
layer->addDataSet(DoubleArray(data2, (int)(sizeof(data2) / sizeof(data2[0]))),
0xff6600, "Proton Cannon")->setDataSymbol(Chart::Cross2Shape(), 11);
// Set the x axis labels
c->xAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]
))));
// Convert the labels on the x-axis to a CDMLTable
CDMLTable *table = c->xAxis()->makeLabelTable();
// Set the default top/bottom margins of the cells to 3 pixels
table->getStyle()->setMargin(0, 0, 3, 3);
// Use Arial Bold as the font for the first row
table->getRowStyle(0)->setFontStyle("arialbd.ttf");
//
// We can add more information to the table. In this sample code, we add the data
// series and the legend icons to the table.
//
// Add 3 more rows to the table. Set the background of the 1st and 3rd rows to
// light grey (eeeeee).
table->appendRow()->setBackground(0xeeeeee, Chart::LineColor);
table->appendRow();
table->appendRow()->setBackground(0xeeeeee, Chart::LineColor);
// Put the values of the 3 data series to the cells in the 3 rows
int i;
for(i = 0; i < (int)(sizeof(data0) / sizeof(data0[0])); ++i) {
sprintf(buffer, "%g", data0[i]);
table->setText(i, 1, buffer);
sprintf(buffer, "%g", data1[i]);
table->setText(i, 2, buffer);
sprintf(buffer, "%g", data2[i]);
table->setText(i, 3, buffer);
}
// Insert a column on the left for the legend icons. Use 5 pixels left/right
// margins and 3 pixels top/bottom margins for the cells in this column.
table->insertCol(0)->setMargin(5, 5, 3, 3);
// The top cell is set to transparent, so it is invisible
table->getCell(0, 0)->setBackground(Chart::Transparent, Chart::Transparent);
// The other 3 cells are set to the legend icons of the 3 data series
table->setText(0, 1, layer->getLegendIcon(0));
table->setText(0, 2, layer->getLegendIcon(1));
table->setText(0, 3, layer->getLegendIcon(2));
// Layout legend box first, so we can get its size
c->layoutLegend();
// Adjust the plot area size, such that the bounding box (inclusive of axes) is 2
// pixels from the left, right and bottom edge, and is just under the legend box.
c->packPlotArea(2, legendBox->getTopY() + legendBox->getHeight(), c->getWidth() -
3, c->getHeight() - 3);
// After determining the exact plot area position, we may adjust the legend box
// and the title positions so that they are centered relative to the plot area
// (instead of the chart)
legendBox->setPos(plotArea->getLeftX() + (plotArea->getWidth() -
legendBox->getWidth()) / 2, legendBox->getTopY());
title->setPos(plotArea->getLeftX() + (plotArea->getWidth() - title->getWidth()) /
2, title->getTopY());
// Output the chart
c->makeChart("datatable.png");
//free up resources
delete c;
return 0;
} |